I'd like to thank Janos D. Pinter and DrBob for their advice on NMinimize,
which I found very helpful.
Mathematica is so carefully designed that its accuracy sometimes may be
annoying. Namely, it never forgets about complex numbers and sometimes I
wish it did. My question is this: is it possible to tell a notebook that it
has to deal only with real numbers? It would be nice to have some global
setting so that one doesn't have to specify the same assumptions over and
over again.
My second question is this: How do I adjust the range of the y-axis of a
histogram? PlotRange->{min,max} doesn't seem to work.
Thanks!
Skirmantas